to retrieve unique values

mahalakshmi · #1 (**permalink**) 02-05-2007

Hi all,
I have a 10.txt file. In this file 2 words are present by name Active and Inactive and these words are repeated 7000 times. I want to take the unique 2 words from this 7000 lines.

Thanks
Mahalakshmi.A

tayyabq8 · #2 (**permalink**) 02-05-2007

Although your question is not clear, a sample input/output would help. But I'll assume that you want extract unique names from the first column of your input file:

Code:

sort -k 1,1 -u inputfile

Above will give you the last occurrence of names.

mahalakshmi · #3 (**permalink**) 02-05-2007

It's working fine. I would like to know about the -u -k optiosn in the sort command. Could you please explain.

thanks

tayyabq8 · #4 (**permalink**) 02-05-2007

Quote:

Originally Posted by mahalakshmi

It's working fine. I would like to know about the -u -k optiosn in the sort command. Could you please explain.

thanks

-k 1,1 sort the content of inputfile using first column as the primary sort key and -u is there to display uniq values only. Read the man sort for more details.

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